Bayer Aktiengesellschaft

Martin Wandel

Rolf Dhein

Rolf-Volker Meyer

Hans-Detlef Heinz

Friedrich Fahnler

Aziz El-Sayed

Peter-Rolf Muller

Karl-Heinz Ott

Ralf Dujardin

Friedemann Muller

Karl Fuhr

Dieter Freitag

Uwe Westeppe

Harald Pielartzik

Hanns-Peter Muller

Jochen Schoeps

Helmut-Martin Meier

Peter-Roger Nyssen

Harald Selbeck

Geert Christoph

Axel Sandquist

Helmut Engelhard

Ernst Gutschik

Manfred Reichardt

This invention relates to decomposable polyamide masses for packaging materials containing 5 to 25% by weight of an addition of linear, oligomeric aliphatic polyesters or polycarbonates with molecular weights from 800 to 4000. These additives preferably consist of polyesters of aliphatic diols and dicarboxylic acids having up to 10 carbon atoms or aliphatic carbonates having up to 10 carbon atoms. The use of such mixtures for easily degradable, decomposable polyamide packages is also claimed, in particular in the form of films or thin walled injection moulded parts for (food) packaging.

Decomposable packing material

Polyamide moulding materials which have been impact-modified with diene and/or acrylic rubbers and can be processed by thermoplastic means and contain special diphenols.

Free flowing moulding materials based on polyamides containing bisphenols

Highly heat distortion resistant moulding compositions are disclosed comprising an aromatic polycarbonate having molecular weights Mw (weight average) of a least 10,000, containing bifunctional carbonate structural units corresponding to formula (Ia) ##STR1## wherein R.sup.1 and R.sup.2 denote, independently of one another, hydrogen, halogen, C.sub.1 -C.sub.8 -alkyl, C.sub.5 -C.sub.6 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.7 -C.sub.12 -aralkyl,

Stabilization of highly heat distortion resistant polycarbonates

A thermoplastic molding composition comprising a polycarbonate resin and ABS is rendered improved levels of resistance to gasoline environment and thermal stability upon the incorporation therewith of a particular vinyl copolymer.

Gasoline-resistant thermoplastic molding compounds

The subject of the invention is flameproofed, non-dripping polyamide moulding compounds which contain specific amounts of the following:

Flameproofed, non-dripping polyamide moulding compound

The invention relates to new, free-flowing polyamide molding compounds and blends, characterized in that they are prepared by mixing of polyamides known per se in the melt with low molecular weight, liquid-crystalline esters and/or ester amides corresponding to formula (I) and/or liquid-crystalline, oligomeric esters and/or ester amides corresponding to formula (II) and, optionally, other additives, at least one polymeric blending component being used as a further additive in the case of polyamide blends, and to the use of these liquid-crystalline (LC) additives I and/or II as flow promoters in polyamide molding compounds and blends and to a process for the production of the new polyamide molding compounds and blends. The invention also relates to the new oligomeric esters and/or ester amides corresponding to formula (II).

Free-flowing polyamide molding compounds and blends

The invention relates to flameproofed, non-dripping polyamide moulding compositions which contain certain amounts of

Flameproofed, non-dripping polyamide moulding compositions

This invention relates to the process of applying heat curable reaction resin mixtures of polyisocyanates (a), polyepoxides (b), reaction inhibitors (c), heat activated reaction catalysts (d) and optionally auxiliary agents and additives (e) for the production of multilayered moulded products based on polyamides with a cured duromer layer by applying the mixture and heat curing of the reaction resin mixtures are preferably applied to the polyamide moulded products produced by the anionic lactam polymerization process by rotation, extrusion or centrifugal casting while the said polyamide products are still hot from the heat of polymerization, e.g. to form internal coatings on rotation cast polyamide pipes. The invention further relates to duromer coated multilayered moulded products produced by the above process.

Multilayered moulded products based on polyamides

This invention relates to thermoplastically deformable branched aliphatic polyamides prepared by the hydrolytic polycondensation of lactams in the presence of small quantities of .alpha.-amino-.epsilon.-caprolactam (ACL) and approximately equivalent quantities of polycarboxylic acids (preferably dicarboxylic acids) and to a process for their preparation which is distinguished by considerably reduced polycondensation times without giving rise to cross-linked products. The process optionally in addition employs a solid phase after-condensation in which rapid further condensation takes place to the products with increased melt viscosity which are branched but are still soluble in m-cresol.

Alpha-amino-epsilon-caprolactam-modified polyamide preparation

The invention relates to fibre or filament mixtures consisting of high shrinkage side-by-side bifilar (mod)acrylic fibres or filaments separately containing TiO.sub.2 and carbon black and of normal fibres or filaments of polyamide, polyester, polyalkylene, poly(mod)acrylic, wool or cotton.

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Dormagen, Germany

Martin Wandel